public enum BirdType
{
    /// <summary>
    /// 经典
    /// </summary>
    Classic,
    /// <summary>
    /// 大嘴
    /// </summary>
    BigMouth,
    /// <summary>
    /// 自爆
    /// </summary>
    SelfDestruct,
    /// <summary>
    /// 加速
    /// </summary>
    Acceleratable
}